将聚酯, 聚已酸乙稀酯从反应器中拿出来.The polyester , polythylene adipate, was removed from the reactor.那些催化剂用于小型管式反应器.Those catalysts are used in small tubular reactors.可用一组间歇式生物反应器.A series of batch biological reactors are used....
在经济衰退期，制造业有很多人失业了。Many jobs in manufacturing were lost during the recession.许多小银行在经济衰退期破了产.Many small banks failed during the recession.结果, 惠普保持了全员就业, 顺利地熬过了衰退期.As a result, HP maintains full employment, smoothly through...
I pushed the problem aside; at present it was insoluble.我把问题抛在一边，目前它还无法解决。At present children under 14 are not permitted in bars.目前，14岁以下儿童不允许进酒吧。Do you believe that sentences for criminals are tough enough at present?你认...